Reading of radioactivity level in fallout by prefecture [9; 00 April 23～ 9; 00 April 24, 2011]
4-3-2-4 Radiation survey of environment
Reading of radioactivity level in fallout by prefecture [9; 00 April 24～ 9; 00 April 25, 2011]
Reading of radioactivity level in fallout by prefecture [9; 00 April 25～ 9; 00 April 26, 2011]
Reading of the radiation rate with the cooperation of universities [July 31, 2011]
Monitoring data at three sites in Ibaraki prefecture [14; 00 August 1, 2011]
Reading of environmental radioactivity level by prefecture [14; 00 August 1, 2011]
Reading of the radiation rate with the cooperation of universities [August 1, 2011]
Monitoring data at three sites in Ibaraki prefecture [14; 00 August 2, 2011]